Author(s): Md. Latiful Islam and Khairun Yahya

Abstract: Three successive reproductive performance and larvae quality from a single matting event of the green mud crab (Scylla paramamosain) was assessed by evaluating the reproductive capability, presence of amino acids in the newly hatched larvae and withstand of the larvae against starvation. The results of the present study revealed that, fecundity and egg fertilization rate was significantly higher (p<0.05) in 1^st and 2^nd spawning event than the 3^rd. Production of viable and phototaxis larvae was also higher in 1^st spawning event and significantly (p<0.05) decreased among successive spawning. Some of the essential amino acids (aspartic acid, isoleucine, leucine, phenylalanine and lysine) in larvae decreased gradually in successive spawning, indicated as traced. Longer time for commencement of medium death (MD⁵⁰) under starvation for 1^st and 2^nd spawned larvae indicated better vitality to survive. Findings of this study suggested the safe use of 1^st and 2^nd spawned larvae for seed production purposes by saving time, space and money for new broods.

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